Yes, both RingCentral Office and Zoho Desk offer a Free Trial.
RingCentral Office is designed for Large Enterprises, Medium Business and Small Business.
Zoho Desk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for RingCentral Office Starts at $19.99/User/Month when Billed Yearly whereas for Zoho Desk Starts at $7/user/month when yearly.
Some top alternatives to RingCentral Office includes RingByName, VoIPstudio, Vonage Business, 3CX, 4PSA VoipNow, Infobip, Voxloud, MightyCall, Ringover, Voxbi and AT&T Office@Hand.
Some top alternatives to Zoho Desk includes Zendesk Support, Tidio Helpdesk, ManageEngine ServiceDesk Plus, Jira Service Desk, HelpDesk, SysAid, Desky, ReadyDesk, Sitehelpdesk, Trakdesk, HESK and BoldDesk.